Improvement in machines for forming pottery-ware



2 Sheets-Sheetl G BRBITSCHWERTH & J. B. HUGHES. Machine for FormingPotteryWare.

No. 201,901. Patented April 2, I878.

Jifl' WITNESSES: lNVENTORS:

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N. FEI'ERS, FHOTO-LITHOGRAPNER WASHXNGTDN. D C.

2 Sheets-Sheet 2. C. BREITSGHWERTH & J. B HUG-HE S Machine 01 FormingPbttery'W aJre-L 'No 203907. Patented April 2, 1878.

WH'NESSES: |NVENTORS."

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",PETERS. PHOTO-LITNOGRAPNER, WASHKNGTON D C 'UNITED STATES PATENTOFFICE.

CONRAD BREITSOHWERTH, OF SYRACUSE, AND JOHN B. HUGHES OF AUBURN, NEWYORK.

IMPROVEMENT lN MACHINES FOR FORMING POTTERY-WARE.

Specification forming part of Letters Patent No. 201,907, dated April 2,1878 application filed February 19, 1878; a

To all whom it may concern:

Be it known that we, CONRAD Bann- SGHWERTH, of the city of Syracuse,State of New York, and JOHN B. HUGHES, of the city of Auburn, Stateaforesaid, have invented new and useful Improvements in Machines forForming Pottery-Ware, of which the following, taken in connection withthe accompany- 1ijng drawing, is afull, clear, and exact descrip- Thisinvention has reference to that class of machines which form flower-potsand other similar pottery-ware by a male or core mold entering a femalemold containing the tempered clay; and it consists in an improvedconstruction, combination, and arrangement of the integral parts of themachine, wherby its operation is materially facilitated and expedited,and a better quality of ware is produced.

The invention is clearly illustrated in the accompanying drawings,wherein- Figure 1 is a side view ofour improved machine in its dormantposition; Fig. 2, the same in itsoperative'position; Fig. 3, a frontview; Fig. 4, a plan view; and Fig. 5, an enlarged Vertical section ofthe mold and the devices connected therewith, illustrating more fullythe construction and operation of our improvements. e

Similar letters of reference indicate corresponding parts.

A is a frame, of wood or iron, and consisting of a post rigidly securedin a perpendicular position, and having extending therefrom horizontalarms, by which it supports the ma chine. B is a platform or table,mounted on the end of a post, 0, arranged to slide vertically in guidesD, which are permanently attached to arms extended from the uprightpostof the frame A. c is a rack attached to the rear of the post 0, and d apinion meshin g in said rack, and mounted on a shaft which is journaledon the guide D, and on its end provided with a lever, l, by means ofwhich the pinion is rotated, and thus the platform B elevated andlowered, for the purpose hereinafter specified. To the top of theplatform B is fitted the bed-plate a, pivoted thereto at one corner, asindicated at b, Fig. 4, or at such relative position as to allow thebed-plateto be swung horizontally off the table B, and en tirely fromunder the plunger or core-mold E, as illustrated in Figs. 3 and 4 of thedrawing. To the bed-plate a is secured the female mold F, and,whenbrought into its proper position upon the table B, brings with it thesaid mold directly under the core-mold E, and in a true perpendicularline therewith.

The core-mold is rigidly secured to the upper horizontal arm of theframe A, and at its upper extremity provided with a horizontalcircumferential flange, e. .Underneath this flange is arranged anannular plate, f, fitted movably on the core-mold, and supported bystuds 9 g, passing through the flange e of the coremold, and having aspiral spring, 8, interposed between a head on its upper end and theflange e aforesaid. The plate f is provided with two projections orarms, 71. h, extended radially therefrom in opposite directions. To thebed-plate a are attachedtwo vertical limbs, '6 z, arranged with one oftheir faces, respectively, in a perpendicular line with one edge of thearms h h. To the same face of the limbs i, near the bottom thereof, areattached springs k, extending upward, and provided at their upper endwith a hook or catch, having a beveled top surface, and held yieldinglyagainst the limbs i. V

m is a rubber or other elastic facing secured to the under side of platef, and either provided with concavity in its bottom face, orsufficiently thin to allow it to be pressed into a circumferentialcavity in the bottom of plate f. The top edge of the female mold F issharpened sufficiently to allow it to cut the surplus material, afterthe pot is formed, clean from around its top.

in is a loose sleeve fitted to the interior of the female mold F; o, thefollower, fitted to the bottom of the aforesaid mold, and attached tothe end of the piston 11, which is extended down through the bottom ofthe mold F, and through the bed-plate a and table B, and provided at itslower extremity with a suitable handle, for forcing the follower upwardby hand.

The follower and upper extremity of the piston are provided with acentral cavity, a,

extending longitudinally into the latter. Into this cavity is fitted thepunch w, which is caused to project above the top of the follower by aspring of suflicient tension to force it through the clay and form theusual aperture in thebottom of flower-pots. By connecting the. punch 10to the follower and giving it sufli cient length to allow it to followthe receding mold a sufficient distance to cause it to project above thebottom of the pot formed, the aperture required in said bottom isinvariably and completely made.

We are aware that similar punches have heretofore been connected withthe core-mold,

but experience has taught us that apunch thus arranged carries with itin its descent more or less clay on its end and presses the same againstthe follower, and thus either leaves a disk of clay over the hole .inthe pot or forms the same-roughly and very imperfect. It is thereforethe combination and arrangement, with the follower, of the punch, in themanner described, which weclaim as our improvement. r

00 represents a catch for retaining the bedplate in its proper positionon the-table B, and y a handle by which to move the bed-plate.

To demonstrate the object of. the peculiar construction and arrangementof the devices described, we will now describe the operation of same:.First, the female mold F is brought from under the malemold .byswinging the bed-plate aupon its pivot b, until carried into theposition shown in Figs. 3 and 4. ofthe drawing, thus giving free accessto the mold F. The clay, previously tempered and properly prepared, isplaced into the female mold, and the bed-plate thence swung onto thetable B, to bring the female mold directly under the male, or core mold,the catch as holding it in that position. By bearing upon the lever l,the table, with bed-piece and female mold, is elevated, and thecoreniold forced into the clay placed into the female mold sufficientlyto press the clay uniformly andcompactly into the space between therespective molds. The surplus material which escapes at the top of themold is cut off by the beveled edge of the female mold. The rubberfacing m protects the edge of said mold, and prevents undue transversestrain in case the bed plate should be held out of a true horizontalposition; and, furthermore, the said elastic facing, byitscircumferential concavity, forms a rounded top edge on the potpressed.

The greatest difficulties encountered in most of machines consisted inthe removal from the mold the .pot after it was formed. Forzthe perfectand expeditious accomplishment. of this we have devised very simple andefficient means. These consist, essentially, of the plate f, supportedyieldin gly in its elevated position, and allowed to be forced downwardsynchronously with the receding of the female mold 'sufficientlyto freethe formed pot from the for the purpose of facilitating the removal ofsame from the machine.

. Having thus described our improvements, what we claim as new, anddesireto secure by Letters Patent, isa r l. The combinationandarrangement of the stationary core-mold E, table B,provided withmeans for elevating and lowering, and the bed-plate at, having attachedthereto the female mold F, and being pivoted eccentric to the table B,substantially as described and shown, for the purpose set forth. i i V iT 2.. Thecombination and arrangement of the stationary core-mold E,provided with flange e, the annular plate f, connected with flanges bystuds g and springs s, and projections h I1, the bed-plate 41, providedwith means forelevating and. lowering it, and withverticallimbs i "5,having springs 70, with catch 11, all constructed and arranged tooperate substantially in the manner and for the purpose specified.

3. The core-mold E,-provided with flange e, annular plate f, heldyieldingly underneath flange e, and provided in its under side with acircumferential concave elastic facing, m, and the female mold F, havinga beveled top edge, all constructed and combined as de-* scribed andshown, forthe purpose set forth. .4. The punch w, when connected withthe follower, as described, forthepurpose specified 5. In combinationwith the female moldF, the sleeve n, as and for the purpose set forth.

In testimony whereof we have hereunto set our hands this 14th day ofFebruary, 1878.

Witnesses E. LAASS, v H. HILL.

